WordPress.org

NOTE: It is recommended that you backup your database before installing the plugin.

1. Unpack archive to this archive to the 'wp-content/plugins/' directory inside of WordPress

• Maintain the directory structure of the archive (all extracted files should exist in 'wp-content/plugins/disqus-comment-system/'

1. From your blog administration, click on Comments to change settings (WordPress 2.0 users can find the settings under Options > Disqus.)

More documentation

Go to http://disqus.com/docs/wordpress